The Flickr photo of IC 4592 is a true color image of the nebula. The Blue Horsehead Nebula is located in the constellation Scorpius, the Scorpion. IC 4592 is classified as a reflection nebula. The nebula resembles the head and upper neck of a horse with the eye represented by the blue star Nu (ν) Scorpii. The main and brightest star in this multiple star system is a main sequence B-type, blue-white, extremely hot star. IC 4592 is about 400 light years from Earth. The light captured to form the Flickr photo left the nebula in the early 18th century for its 400 year journey to Earth.

The reflection nebula is produced by blue light from a star being scattered by adjacent interstellar dust clouds that makes them visible to the camera sensors of a astrographs as bluish structures that form the nebula. The Flickr photo shows the large amount of brownish dust clouds that fills this region of interstellar space.

The technical information that specifies the imaging aspects behind the production of the Flickr photo is as follows.

•Telescope Live remote network AUS-2 astrograph

•The AUS-2 astrograph is located at Heaven’s Mirror Observatory, Australia

•AUS-2 consists of a Takahashi 106ED f/3.6 telescope and a FLI 16083 CCD camera

•AUS-2 uses AstroDon Generation II Luminance, Red, Green, and Blue wideband filters

•Calibrated imaging data was acquired and curated by Telescope Live

•The calibrated image data was processed on my home PC

•58 six-hundred second exposures were taken using wideband filters

•Total exposure time was 9 hours and 40 minutes

•Processing software: Astro Pixel Processor, PixInsight, and Affinity Photo 2

Dati: 17 x 300 sec a ISO 800 -16° c + 5 dark + 25 flat e darkflat

Montatura: EQ6 pro

Ottica: Nikkor 50 mm f/2 @ f/4

Sensore: Canon 40D CentralDS

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 2 ° C - Umidità 55%

(passaggi di nuvole e velature)

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way. The galaxy's name stems from the area of the Earth's sky in which it appears, the constellation of Andromeda.

M101 Pinwheel Galaxy

Equipment:

Celestron AVX

Baader Moon and Sky Glow with IR cut filter

ES ED 102 FCD 100 Scope

SSAG Cope and Camera

ZWO 183mc Pro

Pegasus Focus Cube

Software:

SGP Acquisition

Sharp Cap - Initial Focus and Polar Align

AstropixelProcessor for stacking and initial stretch

Finished in Photoshop

I'll have to look to see how much integration, 3-minute subs for sure though.

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Venus and Jupiter are the two brightest planets in the night sky. They are visible to the naked eye without binoculars and are easily distinguishable even for the casual observer.

Venus appeared much brighter than Jupiter during the conjunction, however, they were both clearly visible to the naked eye in the early evening sky.

Thanks to the relatively short orbit of Venus (225 days) coupled with Jupiter’s 12-year orbit, the pair reach conjunction roughly every 13 months.

In this picture Venus is above Jupiter and you can clearly see the four Galilean moons of Callisto, Ganymede, Europa and Io. If you expand the picture to full size you will even make out some of the background stars.

Equipment Used

Telescope: William Optics Zenithstar 81 APO

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

Main Camera: ZWO ASI533MC Pro at gain 101, temperature -10C

Filter: ZWO UV/IR Cut filter

Focal reducer: William Optics 0.8x 2.00"

Focuser: ZWO EAF

Guide Camera: ZWO ASI290MM Mini guidecam

Guide Scope: William Optics 50mm

Stacked from:

Lights 4 at 20ms, gain 101, temp -10C

Flats 30 at 150ms, gain 101, temp -10C

DarkFlats 30 at 150ms, gain 101 temp -10C

Bortle 4 sky.

Stacked in AstroPixelProcessor and adjusted in Photoshop CS4 and Topaz DeNoise AI

Messier 45, also known as the Seven Sisters or the Pleiades is an Open Cluster located in Taurus. It is obvious to the naked eye in the night sky. It contains blue and luminous stars some 100 million years old. The nebula around the stars was thought to be remains of star forming, but is now considered as unrelated dust.

Object: M 45 (Pleiades)

Optics: William Megrez 72ED F6 + TS Flattener

Mount: Celestron CGEM

Camera: ZWO ASI 1600MMC @-20°C, Gain=75, Offset=15

Filter: ZWO EFW 7x36mm, ZWO 36mm Filters

Exposure: total ~0.8h, B 6x240sec + B 52x30sec, 200 Bias, 40 Darks, 50 Flats per channel

Date: 2017-11-13

Location: Schwaig

Capture: Sequence Generator Pro

Guiding: APM50 Image Master, ASI120MM, PHD2

Image Acquisition: Stephan Schurig

Image Processing: Stephan Schurig

AstroPixelProcessor 1.070: Calibration, Registration, Normalization, Integration, Background Flattening & Calibration, Auto Digital Development

Photoshop 20.0.4: Levels, Curves, Masked Nik Dfine 2 Denoise, Levels, Shadows/Highlights, Masked HighPass Sharpening, Color Balance

Remarks: This image was taken in blue channel only, it shows the ASI1600MMC diffraction pattern

The Veil Nebula

NGC6960, 6974, 6979, 6992, 6995

*** 1st edit in HOS-palette ***

Shooting Location :

* 51° N 3° E

* bortle class 6 backyard

Object Information

* Type : Supernova Remnant

* Magnitude : 7

* Location (J2000.0): RA 20h 45m 00s / DEC +30° 42' 00"

* Approximate distance : 460 parsecs / 1500 lightyears

Hardware

* Mount : Celestron CGX

* Imaging Scope : Canon EF 70-200mm f/2.8 L IS USM II @ 135mm

* Imaging Camera : ZWO ASI 183MM

* Filter Wheel : ZWO EFW 7*36mm + Baader Ha 7nm, Baader OIII 8.5nm & Baader SII 8.5nm

*Guide Scope : Sky-Watcher StarTravel 80

* Guide Camera : ZWO ASI 120MM

Exposures

* Single Exposure Length : 120sec

* Sensor Temperature : -20°C

* Gain : 111

* Offset : 10

* Light Frames :

> Baader Ha : 25x

> Baader OIII : 20x

> Baader S2 : 20x

* Flat Frames :

> Baader Ha : 25x

> Baader OIII : 25x

> Baader S2 : 25x

* Dark Frames : 30x

* Bias Frames : 100x

* Total Integration Time : 2h10m

* Capture Date : 2018-06-28

Capture Software

* Sequence Generator Pro

* PHD2 Guiding

Processing Software

* Astro Pixel Processor 1.061

* Adobe Photoshop

Playing around in my backyard. Class 5 Bortle.

A Lightpolution filter would come in handy, but that's for the next time.

Equipment:

- Canon 450Da, Canon 300mm/f4 IS USM

(iso800, f4, 90sec)

- Skywatcher StarAdventure

This picture is made from:

69 Lights a 90sec, 71Bias, 20Flats, 30Dark.

Stacked in AstroPixelProcessor(APP) afer that in LR and PS.

Gum-2 un gabbiano nello spazio, a 3260 anni luce, nella Costellazione del cane Maggiore, in questa regione molecolare, noteremo in particolare IC-2177 “la testa del Gabbiano” e i 4 ammassi stellari NGC-2335/NGC-2343/NGC/2345 e M-50 trattasi di ammassi di giovani stelle.

Setup, SkyWatcher Azgti in modalità equatoriale, ottica Jupiter 200mm, Asi2600mc, filtro Optolong L-Extreme, teleguida Svbony 30/165 camera guida Asi 120mm

Light 36x600” più Dark, Flat e DarkFlat

Tot. Integrazione ore 6:00

(Avrei voluto integrare almeno il doppio su questo astro, ma il tempo così bizzarro non lo ha permesso, sicuramente in futuro lo farò)

Acquisizione tramite dispositivo Raspberry, con pc da remoto, e applicazione Ekos.

Somma dei Light ed elaborazione tramite, AstroPixelProcessor e Pixinsight.

Livello di Bortle 7.2

Cieli sereni ✨

Dati: 32 x 300 sec a gain 5 e offset 25 a -10° c + 26 dark + 25 flat e darkflat

Filtro Astronomik UV/IR Block L2

Montatura: eq6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Taken using iTelescope T09, a luminesence image of complied from 7 300s frames, total intergration time of 35 minutes. Unfortunately the weather changed and the roof was closed before the Red, Green and Blue channels could be taken, another night maybe. The image was processed in AstroPixelProcessor.

Playing around with colors to get beyond the "usual" red-blue-HOO-look. I captured this widefield of the Tulip Nebula area last year and tried different weights of Ha and OIII to bring out the Tulip as good as possible without overdoing and keep a somehow natural look.

Celestron RASA 8

Celestron Motorfocuser

IDAS NBZ Filter

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

60 x 240 sec (4 h) Ha/OIII, 60 x 30sec RGB

N.I.N.A., Guiding with ZWO ASI 462MC and PHD2

Astropixelprocessor, Photoshop, Pixinsight

NGC 6888 nébuleuse du Croissant , Sony A7s 140x30s, 30 flats, 40 darks, 25 offsets, traitement AstroPixelProcessor, Pixinsight, et Photoshop CC, grosse galère car mon A7S souffre de "Banding" et très dur à atténuer.

The Horsehead nebula in Hydrogen-alpha

Astrophotography is a complex process combing optics, precise mechanical pointing & tracking, real-time guiding corrections, field derotation, environmental, and sequencing through multiple pieces of equipment that all need to “talk” to each other to automate the 66 exposure frames that were obtained here. Small corrections in focus need to be made as temperatures change, small errors in tracking are corrected using a second telescope and camera that counters the mechanical equipment limitations to keep it at level of seeing that the atmosphere allows.; periodic small adjustments in tracking, called dithering, are made to average out sensor issues that could later be mistaken for signal, then finally calibration frames are taken using a special light panel of perfectly uniform illumination…this is all done remotely and robotically controlled by a computer mounted with the scope communicating with my computer at home. My telescope could be in my backyard or halfway across the world.

After collecting the data frames called “light frames” those 66 44MB images are added together in a process called stacking. This registers, normalizes, calibrates, aligns and adds the data signal while keeping the noise as low as possible, it also normalizes gradients and artifacts due to the optics as well as light pollution. …the final preprocessed image is essentially a uniform blank gray single image about 250GB in size with no stars or nebula visible!

The post processing next takes this image and pulls or stretches the signal from the background noise (dark sky sensor dark current) makes two images: one with the stars removed and one with the stars. Those two are processed separately using different techniques to enhance the extremely dim nebula signal from the noise. Then eliminate more noise and enhance sharpness of the fine details. Finally the two Star field and nebula images are recombined in the single image you see.

Just three decades ago équipement and processing of this level were only available in professional research grade equipment costing millions of dollars. Of late, advances in signal processing software, consumer available astronomy camera grade sensors and computing power have allowed amateur astronomers to rival the best science images of only a decade before. And the cost and relative ease of entry to excellent astrophotography just over the last couple of years has decreased immensely allowing even novice astronomers with zero knowledge to press a couple power buttons and the scope, mount and software can automagically produce images that are really pretty good…all controlled on your telephone!!!

My setup is fully robotic and fully remote controlled of high end equipment designed for wide-field targets that are large and extremely dim deep space objects like nebula, star clusters and nearby galaxy clusters. As you may be able to tell it is a complex system of different equipment and software that all must to talk to each other perfectly throughout an evening(s) of imaging. So while the equipment does it thing outside in the cold or buggy heat, I can be cozy, warm and bug free away at home or sleeping. I even get warning alarms if something goes wrong (weather, clouds, dawn light or numerous other equipment issues) so if not automatically corrected that I can correct it remotely or physically need to check on the equipment. However failures are rare. While this project only involved less than a terabyte of data, some projects can collect 4+TB of data which must be off loaded remotely from the scope side SSD drives to a remote raid server.

Equipment

Telescope: WO FLT91 @540mm & f/5.9

Fattener: WO 68III (no reduction);

Camera: ZWO ASI2600MM Pro (monochromatic cooled APS-C CMOS sensor @-10°C, 100gain, 1x1bin);

Filters: Chroma Hα @ 36mm & 5nm band;

Mount: TTS160 Panther Alt-Az

Field derotation: TTS rOTAtor

Guide scope: WO RC51

Guide camera: ZWO ASI290MM

Control Computer: PLL Eagle4

Focus: PLL SS2 robotic focuser

Environment: PLL ECCO-2

Dew control: Kendrick heater straps

Flat panel: Elumiglow custom made

Image processing Computer: MacBook Pro M1

Data storage: Samsung2x 2TB SSD scope side & local OWC Mercury 4x6TB Raid

Remote Power: custom made: with LiTime 100Ah LiFePO battery, Victron Blue remote shunt, inverter, and power supply/charger

Sequencing and Processing

Remote client communications: Parallels Client

Planetarium: Cartes du Ciel & SSPro 6

Sequencing. framing & imaging: N.I.N.A.

Guiding: PHD2

Plate-solving: ASTAP

Alignment & pointing & power up: TTS custom

Communications platform: ASCOM

Focus control: NINA

Environment control: NINA

Calibration frames: NINA

Stacking & Preprocessing: APP - AstroPixelProcessor

Post processing: Pixinsight & Affinity Photo2

Image Frames

Integration time: 1hr 6min (66x60sec) Hα

Calibrations: flats and bias only

Pallet: H-alpha only

This was a fairly simple project as it involved only one Hα filter over a single evening of imaging with relatively short 60 second exposures. I can image more data with different filters and add that to the original data at a later time…

Color images however can take multiple evenings, weeks or years to collect hundreds of 3-5 minute HOS narrowband filter (Hydrogen-alpha, oxygen-III, and Sulfur-II) exposures as well as wideband short exposures of LRGB (luminence, red, blue, and green wide band pass filters) using 6 different filters for the camera. Total integration times (total exposure time) can easily be 40+hours involving thousands of light and calibration frames and multiple terabytes of data. The processing of the final image can take hours to days. So why not just use a color camera (called an “OSC” one shot color) instead of a monochrome sensor? Easy: monochrome sensors are superior and much more sensitive than OSC color cameras that must use a Bayer filter and collect only ¼ of the photons per pixel that a monochrome sensor can over the same amount of exposure time. Color cameras introduce more noise in the signal and further complicate the tracking/guiding errors due to the need for longer exposures. Plus color cameras just plain suck with color calibration and getting star colors those jeweled and bright objects that they are from the blue giants to the deep red carbon stars to all the colors in between. Also false color images are very easy to compose with a monochrome sensor!

Hope you enjoy the beauty of the invisible evening sky as much as I enjoy revealing it!!

Andromeda Galaxy (M31), 08/27/2020

So after I setup the big telescope last weekend I put my old Canon Rebel T5i on my small star tracker and pointed it at the Andromeda Galaxy. I’ve taken better images but they can’t all be winners. I overreached that night trying to do too many things at once. I also setup a time-lapse on yet another camera which I’ll also post soon. With so many things going on I totally forgot to take the calibration frames that were needed for this image. Next time I go out imaging, I’ll limit myself to only one deep-space image and one time-lapse or maybe super wide-angle setup.

Equipment:

Canon T5i

Skywatcher Star Adventure

Tamron 70-200 @ 200mm

Astronomik CLS clip-in filter

Details:

Location – Buck Creek Campground, WA

Bortle Class 3

ISO 3200

58 60-second Lights

0 Darks

0 Bias

0 Flats

Astro Pixel Processor

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #asiairpro #celestronrasa #celestron #astropixelprocessor #optolong #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #m31 #andromedagalaxy

Short session last night only allowed an hour of integration, but still thought I'd post

Nikon d5300 (unmodded)

WO GT81

SW HEQ5-Pro

60-60" Light frames

15 Darks

captured by asi071mc pro at -10C, gain=100, Sigma 135mm f/1.8 lens at f/2.8, 60s*2.

integration by AstroPixelProcessor.

A star-formation region in the Milky Way NGC 7380 in the constellation Cepheus, sometimes known as the Wizard Nebula, imaged in the light of hydrogen.

Multiple exposures, 300 sec. each. GSO 8" f/8 RC OTA, ZWO ASI2600MM Pro cooled monochrome CMOS camera, SVBONY H-alpha 7nm filter, Losmandy GM811G mount, ZWO ASIAir Plus controller, auto-guided. Processed in Astro Pixel Processor and Lightroom.

IC 1848, as known as Soul Nebula, is an emission nebula locatel in the constellation of Cassiopeia; far 7500 years light from the solar system. It conforms a great stars formation region, with visible huge extensions of ionized and excited gas. Soul nebula is integrated by many open star clusters, an intense radio source called W5 and by huge bubbles formed by the intense winds coming from massive young stars. W5 integrates large cavities that were carved out by radiation and winds from the region’s most massive stars, pushing gas together and causing it to ignite into successive generations of new stars. Dense large pillars of material can be seen around the nebula structure, pillars of around 10 light years with stars forming into them.

This image is taken through Ha, SII and OIII filters, and mapped in post-process as a variation of the SHO palette. Because of this, we can see differenciated areas, depending on the signal received. Hydrogen Alpha, Sulfur double ionized or Oxygen triple ionized. The narrowband astrophotography allows us to detect different chemical compositions of the ionized gas emited by the nebulas.

Technical data:

Remote Observatory "FarLightTeam"

Team: Jesús M. Vargas, Bittor Zabalegui,José Esteban, Marc Valero.

Telescope: Takahashi FSQ106 ED 530mm f/5

CCDs: QSI683 wsg8

Filters: Baader Planetarium - Halpha-SII-OIII

Mount: 10Micron GM1000 HPS

Imaging Software: Voyager

Processing Software: PixInsight-AstroPixelProcessor

Captured through 12 December 2021 to 21 February 2022, ( Fregenal de la Sierra ) Badajoz, Spain.

Processing: Marc Valero

Image composed by a Mosaic of 2 tiles:

Ha: 94x1200"

An image in Ha RGB

This nebula according to Glaxy Map

is

"GRS 305.40 +00.20 (Kes 18), often named simply G305, is a major star formation region associated with several HII regions, the star clusters Danks 1 and Danks 2, an estimated 31 O stars and the Wolf-Rayet star WR 48a. It may be one of the most massive star formation regions known in the Milky Way"

Location : Bortle 6

Equipment

Sharpstar z4/Antlia 3 nm Ha filter/ Antlia Triband RGB filter/ZWO 533 Mm pro -for H-alpha /6/533 MC pro for RGB colour/ASIAIR/HEQ5/ASIAIR

Data

just under one and a half hours in RGB (5 minute subs)

3 hours in Ha (10 minute subs)

10 minutes in RGB ( 60 second subs) -for stars

Processing

stacked in AstroPixelProcessor, processed in PixInsight

Processing Notes

Ha and RGB separately

Stack

register Ha, RGB long and RGB short stacks

Dynamic Crop

Gradient Correction

Blur X -correction

Image Solver

SPCC

Starnet++

Nebula

BlurX

NoiseX

GHS

NoiseX

Curves Transformation

Stars

SetiAstro star stretch script

Curves Transformation after applying a luminance mask

Stars and starless combined with Pixelmath

Minor tweaking including a final crop - in Photoshop CS6

Zoom sur M57 , 30x180s + DOF + traitement AstropixelProcessor + Pixinsight , lunette 120x900 CCD 2600Mc Pro à -10°.

IC 447, a reflection nebula in the constellation Monoceros. 3hr 25min total exposure, Explore Scientific ED102 (102mm f/7), ZWO ASI2600MC cooled color camera, processed in AstroPixelProcessor and Lightroom.

About 40 million years ago in a galaxy far, far away a White Dwarf and its binary companion fought their own Star War. The result was a spectacular supernova in that galaxy which outshone even the galactic core. It will have been a spectacular event for all of the citizens of the star systems in that galaxy.

This month, the light from this explosion eventually reached here, being first seen by citizens of good old planet Earth on 14 July 2025. And ten days later by me and my C11.

You can see the supernova in my photo. It is the bright spot to the right of the core of the galaxy. You can zoom in on the picture to see the detail for yourself.

For a more technical description:

The Deer Lick galaxy, NGC 7331, is an unbarred spiral galaxy located 39.8 million light-years away in the constellation Pegasus.

On 14 July 2025, a supernova, named SN 2025rbs, was discovered in this galaxy. It is a type Ia supernova: which typically takes place in binary star systems, in which one of the components is a white dwarf. The white dwarf receives a flux of matter from a more massive companion star, creating an accretion disk which collapses and eventually ends up in a supernova explosion.

Shorter exposures (3 seconds and 20 seconds) did not capture the detail of the galaxy. With longer exposures (120 seconds) the glow of the galaxy burned out the supernova. I compromised with 30-second frames).

The sky clouded over after about 20 minutes so the result is not as good as the picture I got of NGC7331 last year.

~

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

Main Camera: ZWO ASI533MC Pro at -10C

Filter: ZWO UV/IR cut filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 35 at 30 seconds, gain 101, temp -10C

Darks 30 at 30 seconds, gain 101, temp -10C

Flat 30 at 560 ms, gain 101, temp -10C

Dark Flat 30 at 560 ms, gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Cropped and captions added in Photoshop CS4

Ioptron CEM 25p

W/O Zenithstar 73 + flattner

ASI 533MC pro

W/O Uniguide 50mm

ASI 120mini

ZWO EFW

Duo Narrowband filter

ASIair pro controlled

19x5min (total time: 1,6h)

Darks + Flats

Post-processed #astropixelprocessor, PS and LR

Hercules Cluster (M13), 05/24/2020

This is the Great Cluster in the Constellation of Hercules. It is about 25,00 light years away. There are hundreds of thousands of stars packed into an area 145 light-years in diameter.

I got to do a little imaging while I was up at my friend’s place. It was one of those nights where nothing was going right or easy. Most likely because we where partying and laughing like fools. Astrophotography and bourbon do not mix well. LOL. In fact, I did not think this image would work at all and I almost did not even bother to process it.

Equipment:

RASA 8

CGEM-dx mount

ZWO ASI294MC-Pro

ZWO Asiair

Details:

Location – Ahsahka, ID

Bortle Class 4

60 60-second Lights

60 Darks

60 Bias

40 Flats

Deep Sky Stacker

Star Tools

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #rasa #celestron #astropixelprocessor #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #m13 #Herculescluster

NGC 7635, known as the Bubble Nebula in the constellation Cassiopeia. A dynamic region of gas and dust in the Milky Way. The circular feature is a bubble blown in the material between the stars by the radiation and wind of energetic particles by one of the bright stars inside the bubble. Composite of multiple exposures totaling 5hr 32min. GSO RC 8" f/10 telescope, ZWO ASI2600MM monochrome cooled CMOS camera, SVBONY H-alpha 7nm filter, Losmandy GM811G mount, ZWO ASIAir Pro controller, auto-guided. Processed in Astro Pixel Processor, Lightroom, Photoshop.

The Horsehead Nebula (IC434), 01/23/2021

I seem to always be whining about the PNW weather but dam! It has quite literally been five months since the last time I was able to image. For two nights in a row the clouds cleared just long enough for me to set up my equipment before the they would roll back in and I had to tear it all down again. Then, on the third night there was a clear window for four whole hours. I jumped on it, and being a stubborn SOB paid off. I was finally able to play with the new fancy-ass telescope mount my wife bought me for Christmas, it was awesome! I’m pretty happy with this image even though it has less than two hours of data. Maybe someday soon I’ll be able to sink some real time into this object and truly be able to pull out some detail.

Equipment:

RASA 8

iOptron GEM45

ZWO ASI294MC-Pro

ZWO Asiair

Optolong L-eNhance filter

Details:

Location – My driveway

Bortle Class 7

51 120-second Lights

60 Darks

60 Dark flats

60 Flats

Deep Sky Stacker

Astro Pixel Processor

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #asiairpro #celestronrasa #celestron #ioptron #ioptrongem45 #astropixelprocessor #optolong #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #ic434 #horseheadnebula

Commonly called the Pleiades or Seven Sisters, M45 is an open star cluster. It contains over a thousand stars that are loosely bound by gravity, but it is visually dominated by a handful of its brightest members.

The nearly straight, blue-white wisps are streams of large dust particles. As the cloud moves toward Merope, its smaller dust particles are slowed down by the star’s radiation pressure more than the larger particles are. The large dust particles continue on toward the star while the smaller particles are left behind.

The Pleiades cluster has been observed since ancient times, so it has no known discoverer. However, Galileo Galilei, the Italian scientist best known for discovering the largest moons of Jupiter and championing a heliocentric model of the solar system, was the first to observe the Pleiades through a telescope. M45 is located an average distance of 445 light-years from Earth in the constellation Taurus.

Equipment Used

Telescope: William Optics Zenithstar 81 APO

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

Main Camera: ZWO ASI533MC Pro at gain 101, temperature -10C

Filter: ZWO UV/IR Cut filter

Focal reducer: William Optics 0.8x 2.00"

Focuser: ZWO EAF

Guide Camera: ZWO ASI290MM Mini guidecam

Guide Scope: William Optics 50mm

Stacked from:

Lights 19 at 300s, gain 101, temp -10C

Darks 30 at 300s, gain 101, temp -10C

Flats 30 at 150ms, gain 101, temp -10C

DarkFlats 30 at 150ms, gain 101 temp -10C

Bortle 4 sky.

Stacked in AstroPixelProcessor and adjusted in Photoshop CS4 and Topaz DeNoise AI

NGC 6946 is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus. Its distance from Earth is about 25.2 million light-years

It gets its name, Fireworks Galaxy because of the number of Supernova explosions that have been reported in the galaxy. In the last century alone, at least 10 supernovae have been detected in the galaxy. N.A.S.A.

It is also known as a Starburst Galaxy galaxy due to the number of new stars being created.

I have taken images of this galaxy before, but this time I have worked on sharpening up the collimation, adjusted the back-focus and opened up the image train (by replacing the 50mm M42 spacer with an M48 spacer) to reduce vignetting. This has not just helped the image camera it has also improved the view for the guide camera, resulting in better tracking.

~~~~~

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus 256G

Main Camera: ZWO ASI533MC Pro at -10C

Filter: Optolong L-Pro filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 85 at 120 seconds, gain 101, temp -10C

Darks 30 at 120 seconds, gain 101, temp -10C

Flats 30 at 1.1 seconds, gain 101, temp -10C

Dark Flats 30 at 1.1 seconds gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Added captions in Photoshop CS4

Sky-Watcher Quattro 150P f/3.5

Player One Uranus-C OSC (Offset:10 / Gain:100)

UV/IR filter

35 x 135sec. subs (78 mins.)

Processed in Astro Pixel Processor, StarNet and Affinity Photo

NGC6992 la grande dentelle du Cygne

Cette nébuleuse se trouve dans la constellation du Cygne et, comme son nom l'indique,

s'apparente à de la Dentelle avec ses filaments d'oxygène (bleu) et d'hydrogène (rouge) qui s'entrelacent.

Sony A7S astrodon + filtre deep sky + lunette Orion 80ED + réducteur 0.85

140x30s à 3200iso + 50 darks + 50 offsets + 40 flats

Traitement sous AstroPixel Processor et Pixinsight pour la réduction d'étoiles.

162x5min lights a 4 sessions RGB, 1 session Duo-Narrowand-filter

Processed in @astropixelprocessor, PS and LR

Equipment:

Camera/Telescoop: ZWO ASI533MC pro, William optics Zenithstar 73 w. adj flattner 73a,

Guide: ZWO ASI120MM mini + WO uniguide 50mm

Mount: Ioptron CEM 25p

Place: Backyard

Dentelle du Cygne

Canon 6D non defiltré, Tamron 150-600 G2 @600mm f/7.1 iso6400, 105x40s (70 minutes)

Star adventurer, AstropixelProcessor

My second try at astrophotography. Using a Nikon D800, aa Nikkor 500mm AI-P and a Celestron CGEM EQ mount. 30 seconds expositions, blended in Astro Pixel Processor.

M51 photographed from my garden in Zoetermeer, The Netherlands. Estimated SQM ±16. Approximately 4 hrs of data taken with an Explore Scientific 102ED apochromatic telescope, connected to a Nikon D600 (unmodified) dSLR. Post processing in Astropixelprocessor.

Comet C/2022 E3 (ZTF) was discovered by astronomers using the wide-field survey camera at the Zwicky Transient Facility this year in early March. Since then the new long-period comet has brightened substantially and is now sweeping across the northern constellation Corona Borealis in predawn skies.

In the new year on January 12 and at perigee, its closest to our fair planet, on February 1. The brightness of comets is notoriously unpredictable, but by then C/2022 E3 (ZTF) could become only just visible to the eye in dark night skies.

Take earlier in the morning from our backyard observatory, with and RC16” and one-shot color camera QHY 268C with an overall exposure of 1 hour.

Processed with Pixinsight / AstroPixelProcessor and Photoshop. I am still working with the final image where appear the comet and stars aligned and pin-pointed, but it's hard to get our target due to the resolution equipment (0,30"/px).

I hope you enjoy the result.

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera ZWO ASI294MC pro, met OAG, filter :Optolong LPro

30 sep 2022, Gain 120, at -20°, 2 x 30 sec , 63 x 60 sec, 9 x 180 sec (+darks,bias, flats)

Total exposure: 1u 31 min

AstroPixelProcessor + Photoshop

Dirk Van Luyten – Molezon – France

Date: Jul. 29 - Aug. 01, 2023(GMT)

Location: Hurtado Valley, Chile

Optics: Takahashi TOA150B

Camera: ASI6200MM Pro (-10C)

Filter: Chroma SHO 3nm

Gain: 300

Exposure:

　- Panel1 (Northern Part)

　　S-ii 52x300sec.

　　Ha 59x300sec.

　　O-iii 54x300sec.

　- Panel2 (Southern Part)

　　S-ii 51x300sec.

　　Ha 54x300sec.

　　O-iii 51x300sec.

Processing: PixInsight, AstroPixelProcessor

The great globular cluster in Herculer, Messier 13 (M13.